HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 Command-Line Interface reference manual (AG421-96004, March 2007)

104 4 - CONFIGURATION-MODE COMMANDS
Example minna (config) # in-path asym-route-tab remove 10.0.0.0
minna (config) #
in-path asymmetric routing detection enable
Description Enables asymmetric routing, caching and detection in the HP EFS WAN Accelerator.
The no command option disables asymmetric routing detection and caching.
Asymmetric routing detects and reports asymmetric routing conditions and caches this
information to avoid losing connectivity between a client and a server.
When HP EFS WAN Accelerators are deployed in a network, all TCP traffic must flow
through HP EFS WAN Accelerators in the forward and reverse direction. If traffic
flows through an HP EFS WAN Accelerator in one direction and not the other, then
TCP clients are unable to make connections to TCP servers. When deploying HP EFS
WAN Accelerators in redundant networks, there is a possibility of traffic taking
different forward and return paths so that traffic in one direction goes through the HP
EFS WAN Accelerators but traffic in the reverse direction does not.
If asymmetric routing is detected, the pair of IP addresses, defined by the client and
server addresses of this connection, is cached in the asymmetric routing cache on the
HP EFS WAN Accelerator. Further connections between these hosts are not optimized
until that particular asymmetric routing cache entry times out.
Syntax [no] in-path asymmetric routing detection {caching | detection} enable
Parameters
Example
minna (config) # in-path asymmetric routing detection caching enable
minna (config) #
in-path asymmetric routing pass-through enable
Description Enables pass through of traffic in asymmetric networks.
The no command option disables asymmetric routing pass through.
If asymmetric routing is detected, the pair of IP addresses, defined by the client and
server addresses of this connection, is cached in the asymmetric routing cache on the
HP EFS WAN Accelerator. Further connections between these hosts are not optimized
until that particular asymmetric routing cache entry times out.
Syntax [no] in-path asymmetric routing pass-through enable
Parameters None
caching Enables the asymmetric routing cache in the HP EFS WAN
Accelerator.
detection Enables asymmetric routing detection in the HP EFS WAN
Accelerator.